Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1982-09-30
1985-11-12
Ansher, Bernard
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D02813114
REFERENCES:
patent: D222909 (1972-02-01), Stehl
patent: D254297 (1980-02-01), Staiert et al.
patent: 670432 (1901-03-01), Powers
patent: 3435657 (1969-04-01), Weissman
Electric Tachometer Model S120, 7/71, front cover, bottom left.
Ansher Bernard
Pfeffer Terry
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